Automatic stop for talking-machines.



I mgmw,

E. G. BALDON.

AUTOMATIC STOP FOB. TALKING MACHINES.

AYPLIOATION FILED DEC. 18, 1912.

Patented Apr. 28, 1914.

HHiW

JIIIIIIIIIIIIIIIIIIIIE! curios.

AUTQMA'IIG STOP FOE TALKING-MACHINES.

ooaocc.

. Specification of Letters Patent;

Paten'fifl Apr. 28, 1914- Application filed Deccmber 18, 1912. Serial No. 731% v To (125 whom it may concern:

lie it known that l, EARLE C. BALDON, re-

siding at Richmond, in the county of Hen- 1 rice and State of Virginia, have invented a new and useful Automatic Stop for Talking- Machincs, of which the following is a specification.

invention has reference to that class devices or stops in the nature of attachments for talking machines, particularly r machines, that have for their purpose the dish holdin turntable from furmorement when the stylus reaches the the sound grooves in the disk record. .iiy invention primarily has for its object provide an autoetop device for'talkg machines, ot a simple,inexpensiiie cnetruction, designed that it may be readiiy attached to the ordinary. typesof dish talking machines, without requiring disk records of specialconstruction or the rearrangement or special adjustment of the standard makes ct? sound boxes and the tone With other oh iects in view that will here inch/er appear, my invention consists of an automatic stoo device for the purposes stated, and em odics the peculiar construction and novel arrangement of the parts hereinafter explained, specifically pointed out in the appended claims and illustrated in the accompanying drawing, in which? Figure 1 is a perspective view of my nvcntion, so much of a talking machine being shown, as is necessary to illustrate the practical application of my said invention; the sound hot: and the tone arm being shown at the outer or record beginning position in full lines and swung up with my inven. tion in dotted lines. Fig. 1s a similar View the sound box and stylus being at the end of the record and the brake member of the stop device, in cngagemcn; withthe record disk holder. Fig. 3 is :1 perspective new of the several parts that show the simplest or preferred form of my invention, beingthe form shown in :i igs. 1 and 2. Fig. 4; 1s a detail view of the stop setting arm; here matter rcicrredj to. F is a plan view,

parts being in section of a slightly modified arrangement'of my invent on.

My invention, in its sunplest form consists essentially of two'main parts, a supporting arm or momber1,,and a brake memher 2 that includes a setting arm or handle 3, pivotally connected. to the arm 1, whereby disk talkingmachines, the 'saidbrake memher 2, at the proper time is. caused :to engage the rim of the rotary carrier or turntable on which the records are held and stop it, by frictiohal contact therewith.

In the drawing 4idesignates a part of the cabinet of a talking machine, 5 the record carrier or turntable and 6 a disk record operatively mounted on the said carrier or table 5.

. 7 designates a standard bracket, 8 the tone arm and 9 the sound boig'all of which may be ofany well known types of talking mschines now on the market.

In disk machines of the Victrola type, the goose-neck 10, that connects the-sound box or stylus carrier with the tone arm usually has a projecting end 11, that extends through the slcevedike bearing 12 on the outer end of the tone arm. This extension 11, in the simplest arrangement of my invention, I utilize as the support for receiving and sustaining my automatic stop devices, the general arrangement of which is shown in detail in Fig. 3 and the same comprises a tapering arm 12 which may be a hollow tube throughout its length, but for sake of rigidity it is shown solid except at its inner end 13, whiclnhas a deep socket 14 to provide for slipping the said inner end 13 over the goose neck extension 11., to which the extension arm 12 is tightly secured by a split ring clamp 15, the ends of 'which terminate in apertured cars 16 to receive the clamp screw 17, it being apparent that the simple methodof fastening my attachment to the goose-neck of the talking machine provides a quick and eiiicient means for applying my attachment and for connecting it with the goose-neck so that the attachments will be swung up out of the way when the tone arih and stylus is swung up and thereby provide for the desired clearonce for taking off one record or applying a new record (sec dotted lines in Fig. 1). The outer end of the arm 12 threaded to receive a threaded sleeve 18 having apertured ears 19 that form bearings for a pivot screw 20, that passes through the aperture 21 in the inner end of the lever or handle 3, held to swing in a horizontal plane and movable up out of the way with the sound boX, as before stated.

- Lever arm 3 has a fixed pendant member 24; prefeably integral therewith, the lower end of which carries a shoe 25 of suitable yielding material. The shoe 25 and the member 24 are relatively so disposed, with respect to the lever 3, that when at the down or operative position the shoe 25 is in the horizontal plane of the turntable, and is adapted, when the member 2i is moped tin- Wardly toward the disk carrier to contact with the periphery of the said carrier and act as a brake to stop the further rotation of the carrier. The hinged joint of the brake carrying lever and the arm 12, includes a milled nut 27 for tightening up the said hinged connection to adjust the friction of the brake shoe light or heavy, as may be desired.

So far as described, the construction of my automatic stop device is such,assuming the arm with the brake as having been properly adjusted relatively to the disk to be reproduced, and the stylus as started in the record grooves, as indicated in Fig. 1- that as the sound box moves inwardly to- Ward the axis of the disk the brake member moves correspondingly inwardly, it being understood that as the stylus takes the remaining or last sound groove the brake member engages the edge of the turntable, (see Fig. 2) and since, in all disks the last groove continues a, short distance beyond the sound reproducing limit, it follows that the adjustment of the attachment with respect to the disk can be so nicely made that the positive or final braking action on the turntable will not come into play until the record has actually completed its reproduction.

Since records are variable inthe distance (combined width) of the sound producing threads or grooves, it is necessary to adjust the stop to each record. This I accomplish by lowering the sound box stylus into the last groove in the record and then swinging the brake carrying lever over to bring the brake shoe into close frictional contact with the turntable of the machine; so that when the stylus feeds across the sound making grooves, the brake shoe at proper time is brought into contact with the turntable edge and thereby causes sufiicient friction to stop it from further turning and thus prevents the scratching, scraping sounds and at the same time holds the spring motor from running down.

In Fig. 5 I have illustrated a slightly modified arrangement of the invention. The supporting arm 28 has a sleeve bearing 29 and it receives the sound box goose-neck 30 which, in my construction, is a member and formed with a tapering extension 31 to which the brake setting lever 2 is pivotally connected, as shown.

In the modified form, Fig. 5, as also the other form of Fig. l of my invention the brake setting lever and the arms to which they are attached are suiliciently heavy to positively hold the stylus down in the s und grooves and from being jumped out, especially when the brake begins to trictionally engage the turntable.

Among the other advantages in the use of my invention it should be l'nentioncd, that the controlling and ai'ljustment of the brake lever 3 is done with one hand and further when the hand lever 3 is raised the sound box is lifted with it, and the needle may be readily set in the last groove and the brake devices adjusted all with one hand, as stated.

31 designates a sector that is fastened to the solid extension of the goose-neck when used with the form shown in Fig. 5, or to the arm 12 in the form shown in Figs. 1. and 2. The sector is provided with a suitable scale and is relatively so positioned as to extend through a slot 34 in the lever handle 3, the latter having a set screw 3.? for holding the lever at the desired adjustment on the sector.

By using a sector arranged as sh u. the stopping point of a. record can be determined, and the number of: the stopping point onthe sector can be recorded on the said record, so that ever after when the rccord mentioned to bc"pla 'cd it can be stopped without adjustment of the stopping mechanism, by simply referring to the setting number on the record and setting the stopping lever the corresponding number on the sector.

From the foregoing taken in l11l( lloh with the drawing the manner ol. its use, the construction and the :ulvautagcs oi my ill-- motion will be readily apparent.

While the detailed arrangement of the parts. as shown, discloses the practical application of my invention, it is understood the said details of construction may be readily modified or varied to suit the spccific type of disk talking machines to which it is intended to apply them.

What I claim is:

1. The combination with a rotatable momher, a traveling men'ibcr mo\ 'al lc over the same, said traveling member ha ring a transverse bearing, a U-shapcd mcmbcr having one of its legs pivoted in said bearing, a supporting member, means for clamping said supporting member on said U-slmpcd mom-- her to project laterally from said traveling member and turn with said U-shapod member as said U-shapcd member is turmd in said transverse bearing, and a brake member pendently connected with. the outer end of said supporting member, and having a portion for engaging said rotatable nurmlwr.

2. In combination witl. a rotatable member, a traveling member movable over the same, said tray cling member ha ring a transverse bearing, and'a U-shaped member having one of its legs pivotally mounted in said bearing to travel with said traveling member; of a supporting member,- means for removably connecting said supporting member to said U-shaped member to project in the axial line of the pivot of said U-shaped member and rotate with said U-shaped member, a bar extended in a horizontal plane and pivotally connected with the outer end of said supporting member, and a brake shoe on said bar adapted to contact the edge of said rotatable member at' a predetermined time. I

3. In Combination with a, rotatable member, a traveling member movable over the same in a horizontal plane, a member pivotally mounted in said traveling member on a pivotal axis .to move at right angles to the plane of travel of said traveling member\; of a supporting member, means for removably connecting said supporting member to said pivoted member to turn with the same, a bar extended in a horizontal plane and pivotally connected with the outer end of said'supporting member, a brake shoe carried by said bar adapted to engage the edge of the rotatable member at a predetermined time, and means for adjustably connecting the outer end of said brake carrying bar with said supporting member for holding said bar in diiierent positions of angular adjustment with regard to said supporting member, said last namedineans including a seg ment carried'by said supporting member and cooperatively engaging said bar, and

means carried by said bar for clamping said segment to said bar.

4. In combination with a rotatable member and an arm pivoted to swing in a horizontal plane over the said rotatable member, a member pivotally mounted in said arm to turn on a pivotal axis at right angles to that of the arm, of a supporting member,

means for securing said supporting mem-- ber and an arm pivoted at. one end to have its other end swing horizontally over said rotatable. member, a member pivotally carried by the free end of said am to turn on an axis at right, angles to the pivotal axis of the arm, a member projecting-laterally from said arm carriedpivoted member and held with its axis 'coincidenbwith the pivotal brake arm pivoted to said laterally projectin axis of said arm carried pivoted member, a

memberon an axis parallel to the pivota axis of said first mentionedarm, abrake shoe carried by said brake arm, and means and said projecting member whereby the angular distance between the same may be varied substantially as shown and described.

EA RLE o. BALDQN. Witnesses: I

JOHN A. LUNDIN, LEWIS 'B. SCHOMBURG.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of ratents,

' Washington, D. G.

for adjustably connecting said brake arm i 

